BU7442SF-E2 Rohm Semiconductor, BU7442SF-E2 Datasheet - Page 31

• Manufacturer Part Number: BU7442SF-E2
• Description: IC OPAMP 1.7-5.5V GRD SENSE 8SOP
• Manufacturer: Rohm Semiconductor

Specifications of BU7442SF-E2

• Amplifier Type: General Purpose
• Number Of Circuits: 2
• Slew Rate: 0.3 V/µs
• Gain Bandwidth Product: 600kHz
• Current - Input Bias: 1pA
• Voltage - Input Offset: 1000µV
• Current - Supply: 100µA
• Current - Output / Channel: 10mA
• Voltage - Supply, Single/dual (±): 1.7 V ~ 5.5 V
• Operating Temperature: -40°C ~ 105°C
• Mounting Type: Surface Mount
• Package / Case: 8-SOP
• Number Of Channels: 2
• Common Mode Rejection Ratio (min): 45 dB
• Input Offset Voltage: 6 mV
• Input Bias Current (max): 1 pA
• Output Current (typ): 6 mA, 10 mA
• Operating Supply Voltage: 1.7 V to 5.5 V
• Supply Current: 0.24 mA
• Maximum Power Dissipation: 620 mW
• Maximum Operating Temperature: + 105 C
• Minimum Operating Temperature: - 40 C
• Maximum Dual Supply Voltage: +/- 2.75 V
• Minimum Dual Supply Voltage: +/- 0.85 V
• Mounting Style: SMD/SMT
• Shutdown: No
• Supply Voltage (max): 5.5 V
• Supply Voltage (min): 1.7 V
• Technology: CMOS
• Voltage Gain Db: 95 dB
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Output Type: -
• -3db Bandwidth: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: BU7442SF-E2TR

BU7261/BU7261S family, BU7241/BU7241S family, BU7295/BU7295S family, BU7275/BU7275S family
BU7262/BU7262S family, BU7242/BU7242S family, BU7264/BU7264S family, BU7244/BU7244S family
●Examples of circuit
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Vin2
○Adder circuit
○Differential amplifier
Vin1
Vin2
Vin1
R1
R3
R1
R2
Fig. 193 Adder circuit
Fig. 194 Differential amplifier
R4
R2
R3
VDD
VDD
VSS
VSS
31/36
Vout
Vout
Adder circuit output the voltage that added up Input
voltage. A phase of the output voltage turns over,
because non-inverting circuit is used.
Vout is shown next formula.
Vout = -R3(Vin1/R1+Vin2/R2)
When three input voltage is as above, it connects
with input through resistance like R1 and R2.
Differential amplifier output the voltage
that amplified a difference of input voltage.
In the case of R1=R3=Ra, R2=R4=Rb
Vout is shown next formula.
Vout = -Rb/Ra(Vin1-Vin2)
Technical Note
2010.12 - Rev.A